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参数资料
| 型号： | TPS65058RGET |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.8 A DUAL SWITCHING CONTROLLER, 2475 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | 4 X 4 MM, GREEN, PLASTIC, VQFN-32 |
| 文件页数： | 22/26页 |
| 文件大小： | 1898K |
| 代理商： | TPS65058RGET |
www.ti.com................................................................................................................................................... SLVS851A – MAY 2008 – REVISED SEPTEMBER 2008
ELECTRICAL CHARACTERISTICS (continued)
Vcc = VINDCDC1/2 = 3.6V, EN = Vcc, MODE = GND, L = 2.2H, COUT = 22F, TA = –40°C to 85°C typical values
are at TA = 25°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
OUTPUT
VIN = 2.5V to 6V, Mode = GND,
-2%
0
2%
PFM operation, 0 mA < IOUT < IOUTMAX
DC output voltage
DCDC1,
VOUT
accuracy
DCDC2
VIN = 2.5V to 6V, Mode = VIN,
–1%
0
1%
PWM operation, 0 mA < IOUT < IOUTMAX
IOUT = 1mA, Mode = GND, VO = 1.3V,
ΔVOUT
Power save mode ripple voltage
25
mVPP
Bandwidth = 20MHz
tStart
Start-up time
Time from active EN to Start switching
170
s
tRamp
VOUT Ramp up Time
Time to ramp from 5% to 95% of VOUT
750
s
RESET delay time
Input voltage at threshold pin rising
80
100
120
ms
VOL
RESET output low voltage
IOL = 1mA
0.2
V
RESET sink current
1
mA
RESET output leakage current
10
nA
VLDO1, VLDO2, VLDO3 LOW DROPOUT REGULATORS
Input voltage range for LDO1, LDO2,
VINLDO
1.5
6.5
V
LDO3
LDO1 output voltage range
VLDO1
3.3/3.3
V
(DEF_LDO = 1/0)
LDO2 output voltage
VLDO2
1.8/1.2
V
range(DEF_LDO = 1/0)
LDO3 output voltage
VLDO3
1.8/1.3
V
(DEF_LDO = 1/0)
Feedback voltage for FB_LDO1,
V(FB)
1
V
FB_LDO2
Maximum output current for LDO1
400
mA
IO
Maximum output current for LDO2
230
mA
Maximum output current for LDO3
200
mA
LDO1 short-circuit current limit
VLDO1 = GND
850
mA
I(SC)
LDO2 and LDO3 short-circuit current
VLDO2 = GND, VLDO3 = GND
420
mA
limit
Dropout voltage at LDO1
IO = 400mA, VINLDO1 = 1.8V
280
mV
Dropout voltage at LDO2, LDO3
IO = 200mA, VINLDO = 1.8V
280
mV
Output voltage accuracy for LDO1,
IO = 10mA
–2%
1%
LDO2, LDO3
Line regulation for LDO1, LDO2,
VINLDO1,2 = VLDO1,2 + 0.5V (min. 2.5V) to 6.5V,
–1%
1%
LDO3
IO = 10 mA
IO = 0mA to 400mA for LDO1
Load regulation for LDO1, LDO2,
IO = 0mA to 230mA for LDO2
–1%
1%
LDO3
IO = 0mA to 200mA for LDO3
Regulation time for LDO1, LDO2,
Load change from 10% to 90%
10
s
LDO3
PSRR
Power supply rejection ratio
f = 10kHz; IO = 50mA; VI = VO + 1 V
70
dB
Internal discharge resistor at VLDO1,
R(DIS)
Active when LDO is disabled
300
VLDO2, VLDO3
TSD
Thermal shutdown
Increasing junction temperature
140
°C
Thermal shutdown hysteresis
Decreasing junction temperature
20
°C
Copyright 2008, Texas Instruments Incorporated
5
Product Folder Link(s) :TPS65058
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